Apparatus for the separation of ores.



' 'H.-DALLEMAGNE. APPARATUS FOR, THE SEPABAIIONDF OBES. APPLICATIONrILnn XAB. a1, 1911.

1,035,864. Patented Aug, 20, 19 2 'WrrNsssESz FTGJ;

- INVENTOR', J od/m MM/MW' I H. DALLEMAGNE. APPARATUS FOR THE SEPARATIONOF ORES) APPLICATION FILED NAILSI, 1911.

Patented Aug. 20,1912.

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WlTNEssE S:

] NITED STATES PATENT orricn'.

HEnRY DALLEMAGNE, or CLICHY LA GARENNE, FRANCE, assie ton o CQMPAGNIE nnn rnnrmsns DE LAVAGE :on MINERAIS, or rams, FRANCE.

APPARATUS FOR THE SEPARATION OF ORES.

To all whom it may concern Be it known that I, HENRY DALLEMAGNE, citizenof France, residing at 78 Quai de Clichy, Clichy la Garenne, Seine, inthe Republic of France, have invented new and useful Improvements inApparatus for the Separation of Ores, of which the following is aspecification. o

This invention relates to an apparatus for the separation orclassification of ores in grains ot' equivalentsizes, that is to say ofthe same speed of fall in water, comprising essentially a battery ofclassifying vessels called primaries, arranged in series one afteranother, inv combination with one or several batteries of vessels calledsecondaries also in .series in each battery, and connected parallel tothe primary battery and between themselves in-such a way that thesubstances obtained in one or several primary classifiers are conductedto one or several secondary classifiers to be classified again and soon.

The invention comprises also a special type of classifier speciallyadapted to be used as a secondary classifier and characterized by adevice allowing the regulation of the size of field or classifyingsurface, by the employment of the perforated plates, and ot' gratings tosuppress the eddies on the classifying surface and by a perforated valveregulating the classification at the out let of each vessel, the wholeof these devices allowing of obtaining apparatus having a classifyingpower not obtained hitherto.

In the annexed drawing: Figure 1 is a longitudinal section of threeelements in series of a battery of primary classifiers ot' a known type.Fig. 2 shows in plan the arrangement of a battery of said primaryclassifiers mounted in parallel according to the invention with abattery of secondary classifiers of a special type. Fig. I, is avertical section of said secondary classifiers. Fig. 4 is a crosssection of the two batteries iii'parallel shown in Fig. Figs. 5 and (3are detail views on a larger scale.

The classifying elements used as primaries and shown in section in Fig.1 are of a type generally known. They each comprise a receptacle in theshape of a'triangular prism 1. The different receptacles ot' a batterythe dimensions 0t which increasein accordance with a varying rule in thesame direction as the liquid current which trav- Specification ofLetters Patent.

Application filed March 31, 1911.

Patented A119,. 20, 1912. Serial No. e1s,135.'

erses them, are connected with one another by two inclined channels 2.Each receptacle comprises at its lower part, two plates 3 having betweenthem a very narrow longitudinal opening which terminates in an outletchannel t, by which the heavy mat ters deposited are conducted to asiphon 9 provided at its extremity with a regulatable extension 10..Stoppers 12 (Fig. 4:) allow cleaning of the channel at and the siphons9.

Members (3 in form of triangular prisms are placed at the interior ofthe receptacles 1. They are suspended by threaded rods 8 carrying handwheels 7 by means of which the members 6 can be lowered more or lessinto the receptacles l. A tube 11 allows the introduction in eachreceptacle, of a current of water having a high pressure regulatable bya cook 13. This water current is for the purpose of cleaning, itnecessary, the channel .t and the slit 5 after an obstruction or anyother mishap. The crushed ore carried along by a current of liquidfollows the course indicated by the arrows A. Lowering of the prisms (3in the recepthcles 1 has the eli'ect of diminishing the size of the pasige tor the minerals, and consequently causes an acceleration ol thespeed (it current which then only allows, the substances 01 large sizeor of high equivalent to deposit and pass out by the slits 5, the channels -.lthe siphons E) and the orifices 10. Lifting of the prismsproduces on the contrary an increase in the section of the passagecausing a slackening ot the liquid current and the deposit and outflowthrough the oriliccs 10 ot' the finer substances. This accordinglyallows of obtaining tl'n'ough thescorifices substances of size inverselyproportional to that of the section of the passage.-

lhc increasc of the sizes of the receptacles l inproportion with theadvance of the liquid current causes a proportional retardation of thelatter and the deposit of more or less liuc substances in the successivereceptacles ot' the battery.

As above mentioned the invention consists, on the one hand. inconnecting to a battery of elements called primary of the typedescribed. or of any other type, one or several batteries calledsecondaries, the clmracteristic feature of the system lying in the factthat the secondary classifiers,

which are connected together .in series in any manner, are connected inarallel to the primary classifiers so that t e substances deposited inone or several primary classifiers are conducted to one or severalsecondary classifiers to be submitted there to further chssificatiometc. a The different classifiers may be connected together indifferent ways. Each primary classifier could for example feed one ormore secondary rece t-acles in series, by its siphon 9, or a secon aryreceptacle could be fed by several primary rece tacles. vfirst series'ofsecondary classi ers could besides be connected in parallel to a secondseries, then the latter to a third etc. The secondary classifiers couldhave any suitable arrangement. They may in their most simple form bearranged similarly to the classifiers used as primar and described abovewith the difference t at an ascendant injection of clean water, iseffected in a known manner ,throughthe narrow opening 5 of saidclassifiers in such a way as to assist the separation. This ,connectionin arallel has the advantage of producing etter classification andenablin the injection of clean water in the classi er used as primary tobe dispensed with, whereby a 'muchsmaller consumption of water isnecessary than with the-classifiers hitherto used. The ore conducted tothe secondary classifiers has in effect already been subjected to afirst separation in the primary classifiers and it is in suspension in avolume of water considerably less than that which flows in these primaryclassifiers. The

amount of clean water to be injected in said secondary classifiers tocomplete the classification is also reduced by a considerable areemployed as represented in the annexed drawing and which are formed binverted quadrangular'pyramids 14 the imensions of which increase in thedirection of flow of the liquid current which traverses them for thesame reasons'as in the case of the primary classifiers. The receptacles14 are in connection withv one another by channels 15 V provided withperforated plates or gratings 5o 16, 17 which are for the purpose ofmitigating the eddies.

he base of each of the pyramids is formed by a perforated plate orrating21 on which can be transversely disp aced two blocks 22 actuatedby-screws 24 with opposite threads which are carried b bearers 27 anddraw nuts 23 fixed on the )locks. The movement is given to the whole bywheels 28 and the two screws are connected by the pinions 25 and thechain 26. This arrangement allows of separatingor-bringing together thetwo blocks of cat: receptacle and of diminishing or increasin .the'speed which is to be given to the liqui current which passes between 66them. Sluice boards 18 mounted on axles 19 The amount. Preferablysecondary classifiers ST AV and actuated by means of tficf'vih titoallow of increasing or lowering the level of the liquid above the plates21. The point of each p ramidis formed by a conical art blocke by aplugor valve 29- suspe-nde on a threaded rod 30. A hand wheel 31 allows ofraising or lowering each valve 29 and of thus varying the size of thesection of the passage 32. Each valve is hollow as shown at 33 and isperforated at 34 in the direction of a helix to allow the outlet ofliquid which arrives under pressure through the tube 35 and of which theflow is regulated by the cook 36. The substances passing with the liquidcurrent across the perforated plates v -16 and 17 are classified on theplates 21.

The fine particles of low equivalent sustained by the ascending currentintroduced by the pipe 35 do not pass through these plates and arecarried to the following receptacle with a regulatable speed inverselyproportioiial to the distance which separates the blocks 22. Thesubstances having passed through the plate 21 fall toward the point ofthe pyramid traversing the section 32 where they are submitted to afresh classification and are finally evacuated by the siphons 37provided with regulatable orifices 39 and with movable joints 38 whichallow of maintaining these orifices at the desired height. As can beunderstood this type of secondary classifier has in itself importantadvantages due notably to its arrangement for the regulation of the sizeof the classitying? surface, allowing of accelerating or of retardingthe speed of the current; to the perforated valve effecting aclassification at the outlet; to the employment of perforated plates,gratings and sluice boards which regulate the current and suppresseddies on the classification surface, and tothe employment of outlet.siphons of variable height, allowing of regulating the speed of flow ofthe classified substances as desired.

Having now described my invention, what claim as new and desire tosecure by Letters Patent is:

1. In combination a primary battery of settling classifiers connected inseries by overflows, and one or more secondary batteries comprisinghydraulic classifiers, the units of each secondary battery beingconnected in series by overflows, means connecting each unit of asecondary battery to a corresponding unit of the preceding battery andadapted to deliver the settled products of each unit oi one battery tothe correspond-- ing unit ofthe secondary battery.

2. In an apparatus for classifying ores, means forming a classifyingsurface, means for causing a liquid stream containing the ores to beclassified to passover said classifying surface, means for directing aliquid stream upwardly throughathe classifying surface and means forregulating the width 130 15 lowering the valve,

Lessee a of said classifying surface, comprising two side blockstogether with means for drawing said side blocks nearer to each. otheror spreading them apart. 5 3. In an apparatus for classif ing ores, thecombination of a receptacle faring upward, and having a conical outletat the bottom, an upwardly extending tube in said outlet, means forforcing water through said 10 tube, a hollow valve into which the tubeextends, the lower part of said valve having a conical shape similar tothat of the outlet and being provided with holes arranged along a helix,and means for raising and substantially as described and for the purposeset forth.

4. In an ore classifier, the combination of a classifying receptacleprovided with channels on the inlet and outlet sides thereof a BESTAVAILABLE coPv a} perforated plate in thereceptacle on a level with thebottom of said channels, at the point of connection with the receptacle,perforated plates arranged in the channels and through which the liquidcurrent is adapted to pass, said perforated plates having the purpose ofmitigating eddies and pivoted sluice boards in the channels on theoutlet side of the receptacle for regulating the level of the liquidabove the first-named perforated plate.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

H. C. Coxn.

